Theme 04: Soil Fertility and Plant Nutrition
Archived
This content is available here strictly for research, reference, and/or recordkeeping and as such it may not be fully accessible. If you work or study at University of Kentucky and would like to request an accessible version, please use the SensusAccess Document Converter.
Publication Date
2001
Location
Brazil
Description
The contents and the extraction of mineral nutrients were determined in a coastcross pasture established on a dark red latosol (Hapludox), in São Carlos, SP, Brazil, under tropical altitude climate, receiving five rates of urea and ammonium nitrate, applied on surface. There were differences (P< 0.05) among sources and rates of N. Nutrients extraction increased with the nitrogen levels. Especially high were total N (319 and 446 kg ha-1) and K (341 and 467 kg ha-1) extractions. When forage yield was high (treatment with 500 kg of N ha-1) and for both fertilizers, macronutrients extraction was greater for K and N, followed by Ca, S, P and Mg. Micronutrients extraction occurred in the following decreasing order: Fe, Mn, Zn and Cu.
Citation
Primavesi, A. C.; Primavesi, O.; de A. Corrêa, L.; Cantarella, H.; da Silva, A. G.; and Freitas, A. R., "Effect of Sources and Rates of Nitrogen on Nutrients Extraction in Coastcross Pastures" (2001). IGC Proceedings (1985-2023). 24.
(URL: https://uknowledge.uky.edu/igc/19/4/24)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Effect of Sources and Rates of Nitrogen on Nutrients Extraction in Coastcross Pastures
Brazil
The contents and the extraction of mineral nutrients were determined in a coastcross pasture established on a dark red latosol (Hapludox), in São Carlos, SP, Brazil, under tropical altitude climate, receiving five rates of urea and ammonium nitrate, applied on surface. There were differences (P< 0.05) among sources and rates of N. Nutrients extraction increased with the nitrogen levels. Especially high were total N (319 and 446 kg ha-1) and K (341 and 467 kg ha-1) extractions. When forage yield was high (treatment with 500 kg of N ha-1) and for both fertilizers, macronutrients extraction was greater for K and N, followed by Ca, S, P and Mg. Micronutrients extraction occurred in the following decreasing order: Fe, Mn, Zn and Cu.
